Patent GB-453892-A (GB)
Title: Method of and means for inserting printing plates into frames and/or removing platestherefrom
IPC: B41B1/18
Filed: 1935-03-21
Abstract: 453,892. Removing and inserting printing-plates. ADDRESSOGRAPH CO., Cleveland, Ohio, U.S.A. March 21, 1935, No. 8927. Convention date, July 5, 1934. [Class 100 (ii)] [See also Group II] Sheet-metal embossed printing-plates such as address-plates are mounted on or detached from holding-frames in which they are held by means including a depressible latch, by surmounting the latch by a member which does not obstruct the travel of the plate, moving the holder relatively to the member to depress the latch, sliding the plate into or out of position on the holder across the depressed latch and over the top of the member, and then releasing the latch. Fig. 3 shows a plan and Fig. 4 a sectional elevation of a machine comprising a magazine 30 from which holders F are fed to a position F1 where the used plate P, if any, is detached from the holder and a new plate fed from a magazine 60 is inserted in the holder, which is then delivered into a receiver 90. Each holder F is provided with depressible tongues 14, Fig. 13, engaging the ends of the plate P and with lips 11, 12 overlying the sides thereof; index tabs T are held in keepers 16. The magazines 30, 60, 90 are arranged at right angles to an inclined base 20. The holders F in the magazine 30 rest on bars 41, 42 connected together to form a guideway 40 for a pusherslide 52 having top and bottom cross-plates 51, 53, the plate 51 being cut away at 54 to avoid the tabs T, thus forming lugs 55 for engaging the holder. A spring 45 presses the holder on to the bars 41, 42 as the holder is advanced, a spring-pressed pawl 57 raised by the holder snaps behind it to prevent backward movement during the return stroke of the pusher, and stops 34 prevent movement of the holders F in the magazine during that stroke and guide them into correct position as they descend. The plates P are fed from the magazine 60 along a guideway 71 at right angles to the guideway 40, by a reciprocating pusher 70, the forward end 72 of which is bent downwardly and slotted to form tines, which enter grooves in plates 91,. 92 supporting the stack in the magazine, as the pusher moves to the left, and are cammed upwardly shortly after they project beneath the bottom plate in the stack, movement of the next plate being prevented by a collar 66 engaging a recess in a serpentine edge on the side of the plate ; the collar may engage two or more plates if required. Stops 67, 68, adjustable to suit the width of plate, retain the plates P in engagement with the collar 66 and the wall of the magazine ; the stop 67 may be set by a cam angularly adjustable into four positions. As the pusher 70 moves to the left, a pivoted member 101 thereon engages a cam bar 100 on the guideway 40, which then rocks upwardly about pivots 48 whereby the tongues 14 engage and are depressed by stops 84, 85 ; also, as the plate P leaves the guideway 71, it rides under cams 110<a>, 110<b> so as further to depress the right hand tongue 14, and then moves beneath the lips 11, 12. Meanwhile, the used plate has been removed from the holder bv an extension 115 of the pusher 70, and when free of the lips 11, 12 is ejected by a spring plate 125 bent outwardly by the plate P as that plate moves to the left. At the end or slightly before the end of the stroke of the pusher 70, a camsurface on the end of the bar 100 engages the member 101, which is swung to one side, and the guideway 40 drops by gravity into normal position where it rests on an adjustable stop 86. To ensure descent of the plates in the magazine 60, a lever carrying an arm 161 arranged under the forward end of the stack is rocked by a cam on the pusher 70 so as to jog the stack of plates up and down, and to ensure registration of the collar 66 with recesses in the plates, the operative end 165 of the ejector 115 enters a slot in the magazine during the return stroke and engages the plates immediately above the collar. The loaded frame is delivered into the magazine 90 by an extension 56 of the pusher 52, spring tongues 142, 143 extending forwardly of a ledge 141 raising the holder so that the ledge engages depressed parts associated with the keepers 16. As the guideway rises, the delivered holder is raised in the magazine past latches 150. The holders in the magazine 90 are arranged at a slight inclination to the base 20, the bars 41, 42 being tapered off to correspond. The pusher 70 is reciprocated by a lever 179 oscillated from a hand or power driven wheel 170, and the pusher 52 has a ball-and-socket connection with a lever 188 connected to the lever 179. Specifications 331,335, [Class 100 (ii)], and 345,674 are referred to.